CN114407357B

CN114407357B - Array micro-nozzle for direct-writing printing and preparation method thereof

Info

Publication number: CN114407357B
Application number: CN202210244387.XA
Authority: CN
Inventors: 茹李波; 黄飞; 李赛锋
Original assignee: Corevoxel Hangzhou Technology Development Co ltd
Current assignee: Corevoxel Hangzhou Technology Development Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-14
Publication date: 2022-07-12
Anticipated expiration: 2042-03-14
Also published as: CN114407357A

Abstract

An array micro-nozzle for direct-writing printing and a preparation method thereof comprise a pressing plate, a micro-nozzle, a base and a material cavity assembly, wherein a plurality of V-shaped mounting grooves are formed in the base, the micro-nozzle is matched with the V-shaped mounting grooves, the number of the V-shaped mounting grooves can be set according to actual production requirements, and one micro-nozzle is mounted in each V-shaped mounting groove so as to print micro-circuits arranged in the V-shaped mounting grooves at the same time, so that the printing efficiency of printing equipment is improved, and the distance between the micro-nozzles is controlled by controlling the distance between the V-shaped mounting grooves; the clamp plate is installed on the base to the shower nozzle supports to establish in V-arrangement mounting groove a little, and the material chamber subassembly covers establishes in the top of little shower nozzle, forms the material chamber through the material chamber subassembly, thereby is convenient for to the interior input printing material of little shower nozzle.

Description

Array micro-nozzle for direct-writing printing and preparation method thereof

Technical Field

The utility model relates to the technical field of 3D printing equipment, in particular to an array micro-nozzle for direct-writing printing and a preparation method thereof.

Background

3d printing is carried out on a micro-circuit with a large height-width ratio in the market, and the common printing mode is as follows, (1) single-nozzle direct-writing printing is adopted, the printing efficiency of single-nozzle printing is low, and the industrial mass production is difficult to adapt; (2) an array printing head is constructed by combining a plurality of single spray head modules, and the single spray head modules have large sizes, so that high-density spray head arrangement is difficult to realize; (3) the array nozzle assembled by the capillary is used for printing, the capillary assembled nozzle is limited by the self processing technology of the capillary, the aperture is over 50um generally, and the xyz error of the array nozzle and the nozzle aperture error are difficult to control; (4) at present, array micro-nozzles integrally processed and manufactured are also available in the market, and the problems that the aperture of the array nozzle processed by the integrated machine is limited, the aperture tolerance is difficult to control, and a convex tip is difficult to manufacture exist; generally, a certain technical bottleneck exists in the micro-circuit 3d printing, and the popularization of the micro-circuit 3d printing is difficult to realize.

Application number is CN 201821750617.5's utility model discloses a bull printing mechanism of 3D printer, include the fixed slider of being connected with the movement track of 3D printer and set up the control by temperature change on fixed slider and beat printer head, the control by temperature change beats printer head and includes the controller and beat printer head of being connected with the controller. The utility model adopts three printing heads with different calibers, which can not improve the printing efficiency of the printer and can prevent the printing deformation. Use when printing and extrude the less profile that beats printer head and print the object of bore, guarantee to print the meticulous smoothness of profile of object, the inside packing of profile is used to extrude the bore and is beaten printer head printing a little bigger to improve printing speed, the outside support of profile then uses and extrudes the great printer head of bore and prints, not only can improve printing speed, and can support the profile of printing the object, prevent to warp, promote greatly and print efficiency, do not influence the printing precision of object simultaneously, especially to printing large-scale object and slope object, the effect is more obvious. Although this application discloses a bull printing mechanism of 3D printer, set up a plurality of printer heads that beat on printing mechanism, the above-mentioned high precision that beats printer head is relatively poor, is unfavorable for improving and prints the precision, can't satisfy the printing demand of high accuracy.

Disclosure of Invention

In view of the above disadvantages, the technical problem to be solved by the present invention is to provide a method for manufacturing an array micro-nozzle for direct-write printing, wherein a plurality of micro-nozzle units are disposed in the print head, and the print head can form a plurality of micro-circuits by performing printing once, thereby effectively improving the printing efficiency of the micro-circuits.

In order to solve the technical problems, the utility model adopts the technical scheme that,

the utility model provides a little shower nozzle of array for directly writing printing, including the clamp plate, little shower nozzle, base and material chamber subassembly, it has a plurality of V-arrangement mounting grooves to take shape in the base, little shower nozzle and V-arrangement mounting groove adaptation, the clamp plate is installed on the base, in order to establish little shower nozzle support in V-arrangement mounting groove, material chamber subassembly cover is established in the top of little shower nozzle, install the elastic block subassembly between clamp plate and little shower nozzle, it has the diaphragm capsule to take shape on the elastic block subassembly, in order to reduce the frictional force between elastic block subassembly and the little shower nozzle.

Furthermore, the elastic cushion block assembly comprises an elastic cushion block and a cushion block film, the elastic cushion block is arranged on the pressing plate, the cushion block film is attached to the elastic cushion block, the cushion block film is abutted to the micro-nozzle through the elastic cushion block, and the film groove is formed in the cushion block film.

Furthermore, an elastic mounting groove is formed in the pressing plate, the elastic mounting groove is matched with the V-shaped mounting groove, and the elastic cushion block assembly is mounted in the elastic mounting groove.

Furthermore, glue is filled in the V-shaped mounting groove, the elastic cushion block assembly and the elastic mounting groove so as to fix the micro-nozzle with the base and the pressing plate.

Furthermore, the material cavity assembly comprises a material cavity block and a material cavity cover plate, the material cavity block is covered above the micro-spray head, a material cavity groove is formed in the material cavity block, and the material cavity cover plate is covered on the material cavity block.

Furthermore, the upper end of the micro-spray head extends into a material cavity groove, and glue is filled in the material cavity groove so as to glue the material cavity block with the micro-spray head.

Furthermore, a mounting part is formed on the base, a V-shaped mounting groove is formed in the front face of the mounting part, the upper end face of the mounting part and the upper end face of the pressing plate are located on the same horizontal plane, and the height of glue is not higher than that of the upper end face of the micro-sprayer.

Furthermore, a feeding head is formed on the material cavity cover plate, a feeding hole is formed in the material cavity cover plate and communicated with the material cavity groove, and the feeding head is used for installing a feeding pipeline.

The preparation method of the array micro-nozzle for direct-writing printing comprises the following steps,

preparing each part of the array micro-sprayer, and preliminarily assembling the pressing plate, the elastic cushion block assembly, the micro-sprayer and the base to form a semi-finished sprayer;

step two, mounting the semi-finished product of the spray head on a spacing correction station, leveling a clamp through measurement of a laser height measuring sensor, shooting an image of the needle tip end face of the first micro spray head through a vertical camera, moving the vertical camera, and sequentially shooting the needle tips of all the micro spray heads to obtain the position of the circle center of an inner hole of each needle tip;

calculating the distance between the needle point inner holes under the X-direction projection of each needle point according to the circle center position of each needle point inner hole; sequentially rotating each micro-nozzle to enable the X-direction distance of the inner hole of each needle point to meet the design requirement;

taking down the semi-finished product of the spray head after the distance adjustment is finished, mounting the semi-finished product of the spray head on a needle point height correction station, leveling a base of the semi-finished product of the spray head through the measurement of a contact type height measuring sensor, and leveling the upper end surface of the plane reference block through the measurement of a laser height measuring sensor;

moving the semi-finished product of the sprayer to the position above the plane reference block, abutting the micro sprayer of the semi-finished product of the sprayer against the plane reference block, aligning the heights of the micro sprayers, and measuring and rechecking the heights of the micro sprayers through a height measuring sensor;

taking down the semi-finished product of the spray head after the height of the micro spray head is qualified, and bonding the base, the micro spray head, the elastic block component and the pressing plate by using low-shrinkage ultraviolet photosensitive glue to fix the micro spray head;

step seven, mounting the material cavity block on the semi-finished product of the spray head, ensuring that the upper end face of each micro-spray head is inserted into the material cavity groove, and injecting low-shrinkage ultraviolet photosensitive glue into the material cavity groove so as to seal a gap between the micro-spray head and the material cavity groove through the glue;

and step eight, mounting a material cavity cover plate on the material cavity block.

Further, the second step also comprises the following steps,

(2.1) mounting the semi-finished product of the spray head on a spacing correction station, wherein the needle point of the micro spray head is arranged upwards;

(2.2) manually pressing the micro spray head down to enable the tail end face of the micro spray head to be in contact with a high-precision plane of the spacing correction station;

(2.3) scanning the height trend of the base of the semi-finished product of the spray head through a laser sensor, and leveling the base of the semi-finished product of the spray head through adjusting a clamp;

and (2.4) shooting an image of the needle tip end face of the first micro-nozzle by the vertical camera, moving the vertical camera to enable the circle center of the inner hole of the needle tip to coincide with the center of the image of the camera, and recording the moving coordinate of the micro-nozzle at the moment as the circle center position of the inner hole of the needle tip.

The utility model has the advantages that (1) a plurality of V-shaped mounting grooves are arranged in the base, and a micro-nozzle is arranged in each V-shaped mounting groove to print the micro-lines arranged in the V-shaped mounting grooves at the same time, thereby improving the printing efficiency of the printing equipment.

(2) The deformation of the flexible block and the membrane is released through the membrane groove, so that a proper pressure is obtained to fix the micro-sprayer, the friction force between the elastic block component and the micro-sprayer is reduced, the micro-sprayer can be jointly guaranteed to rotate in a damping mode and move in the z direction in the V-shaped mounting groove, and the micro-sprayer can be conveniently adjusted in position.

(3) The method for preparing the array micro-nozzle can adjust the distance and the height of the position of the discharge port of the micro-nozzle, and can obtain the ultra-high precision micro-nozzle needle distance so as to improve the printing precision of the 3D printer.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the cover plate of the material removing cavity hidden in fig. 1.

Fig. 3 is a schematic structural view of the material cavity block hidden in fig. 2.

Fig. 4 is a schematic structural diagram of the elastic block assembly.

Fig. 5 is a partial enlarged view at I.

Fig. 6 is a schematic structural view of the base.

Fig. 7 is a schematic structural diagram of the second embodiment.

FIG. 8 is a diagram showing a processing step of the base in the second embodiment.

FIG. 9 is a schematic structural diagram of the third embodiment.

FIG. 10 is a schematic structural view of the fourth embodiment.

Reference numerals: the device comprises a pressing plate 1, a micro-sprayer 2, a base 3, a material cavity component 4, a V-shaped mounting groove 5, a film groove 6, an elastic cushion block 7, a cushion block film 8, an elastic mounting groove 9, a material cavity block 10, a material cavity cover plate 11, a material cavity groove 12, an installation part 13, a feeding head 14 and a base 15.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Example one

In this embodiment, the X direction is the orthographic projection direction of little shower nozzle needle left and right sides interval, the Y direction is the orthographic projection direction of little shower nozzle needle interval back and forth interval, the Z direction is little shower nozzle needle direction of height, and 3D printing apparatus in this application mainly used carries out the in-line printing, it mainly goes on along the Y direction to print the direction, so this array little shower nozzle mainly controls the X direction (interval) precision and the Z direction (height) precision of each little shower nozzle, the interval that is used for guaranteeing once to print the microcircuit takes shape keeps the unanimity with printing the height all the time, be convenient for once print and form a plurality of high accuracy microcircuits, improve the printing efficiency who beats printer head.

An array micro-nozzle for direct-writing printing comprises a pressing plate 1, micro-nozzles 2, a base 3 and a material cavity assembly 4, wherein a plurality of V-shaped mounting grooves 5 are formed in the base 3, the micro-nozzles 2 are matched with the V-shaped mounting grooves 5, the distance between every two adjacent micro-nozzles 2 is preliminarily controlled through the V-shaped mounting grooves 5, and the outer handles of every two adjacent micro-nozzles 2 are ensured to be in an approximately equidistant state, so that the distance between discharge holes of the micro-nozzles 2 is controlled within an adjustable range; in the actual production process, the number of the V-shaped mounting grooves 5 can be set according to the number of micro lines to be printed actually, and one micro spray head 2 is mounted in each V-shaped mounting groove 5 so as to print a plurality of in-line micro lines simultaneously, thereby improving the printing efficiency of the printing equipment; the distance between the outer handles of the micro spray heads 2 is controlled by controlling the distance between the V-shaped mounting grooves 5, so that the printing of the in-line micro lines with different distances is met; the clamp plate 1 is installed on base 3 to establish 2 supports of little shower nozzle in V-arrangement mounting groove 5, and the mounting means is simple, and is convenient for little shower nozzle 2 rotates, is convenient for follow-up interval to 2 discharge openings of little shower nozzle adjust, and material chamber subassembly 4 covers establishes in the top of little shower nozzle 2, forms the material chamber through material chamber subassembly 4, through the material chamber to little shower nozzle 2 interior input printing material.

Install the elastic block subassembly between clamp plate 1 and little shower nozzle 2, it has diaphragm capsule 6 to form on the elastic block subassembly, release elastic cushion 7 through diaphragm capsule 6, the deflection of cushion membrane 8, thereby obtain comparatively suitable pressure and fix little shower nozzle 2, reduce the frictional force between elastic block subassembly and little shower nozzle 2, guarantee jointly that little shower nozzle 2 can have damped rotation in V-arrangement mounting groove 5, z is to removing, greatly reduced little shower nozzle 2's the regulation degree of difficulty, be convenient for artifically adjust little shower nozzle 2.

The elastic cushion block component comprises an elastic cushion block 7 and a cushion block film 8, the elastic cushion block 7 is installed on the pressing plate 1, the cushion block film 8 is attached to the elastic cushion block 7, the friction force between the elastic cushion block component and the micro-sprayer 2 is reduced, the elastic cushion block 7 is abutted to the micro-sprayer 2 through the cushion block film 8, the film groove 6 is formed in the cushion block film 8, the film groove 6 is arranged on the cushion block film 8, the stretching deformation of the cushion block film 8 is released, the pressure of the elastic block component on the micro-sprayer 2 is reduced, the micro-sprayer 2 and the elastic block component are controlled, the friction force between the V-shaped mounting grooves 5 is controlled, the position of the micro-sprayer is adjusted conveniently, and the adjustment convenience is improved.

In this embodiment, the material of the elastic cushion block 7 is silica gel, the cushion block film 8 is made of a polyimide film, the cushion block film 8 is attached to the elastic cushion block 7 in the production process, and then the cushion block film 8 is subjected to laser grooving or cutter grooving through laser or a cutting tool to form the film groove 6, and in the actual production and use process, the materials of the elastic cushion block 7 and the cushion block film 8 are not limited to the above materials.

In this embodiment, the shaping position of membrane groove 6 and little shower nozzle 2 one-to-one, promptly, set up membrane groove 6 in the laminating department of 2 outer handles of little shower nozzle and cushion membrane 8, the microstructure of

membrane groove

6 and 2 laminating departments of little shower nozzle is as follows, and the cushion membrane 8 and the contact of little shower nozzle 2 of 6 positions in membrane groove are supported and are established, and the elastic cushion 7 that 6 positions in membrane groove correspond does not take place the touching with little shower nozzle 2.

Because the tensile property of cushion membrane 8 is relatively poor, when not slotting cushion membrane 8, when the little shower nozzle contacts with cushion block subassembly, the elasticity of the cushion block subassembly that cushion block 7 and cushion block membrane 8 combination formed is relatively poor, lead to cushion block subassembly to produce great pressure to the little shower nozzle, be unfavorable for rotating little shower nozzle 2, through diaphragm capsule 6, make cushion block membrane 8 be multistage formula structure, each section cushion block membrane 8 all can take place deformation, the tensile volume of cushion block membrane 8 when can releasing cushion block subassembly deformation, suitably increase the elasticity of cushion block subassembly, thereby reduce the pressure of cushion block subassembly to the work piece, thereby be convenient for adjust little shower nozzle 2.

An elastic mounting groove 9 is formed in the pressing plate 1, the elastic mounting groove 9 is matched with the V-shaped mounting groove 5, the elastic cushion block assembly is mounted in the elastic mounting groove 9, and the elastic cushion block assembly is convenient to mount through the arrangement of the elastic mounting groove 9.

V-arrangement mounting groove 5, the cushion block subassembly, the intussuseption of elastic mounting groove 9 is filled with glue, glue adopts the photosensitive glue of low shrink ultraviolet, be convenient for to clamp plate 1, little shower nozzle 2, the clearance between base 3 and the cushion block subassembly is filled, and with little shower nozzle 2 and base 3, clamp plate 1 is fixed, be convenient for fix shower nozzle semi-manufactured goods, guarantee in the follow-up installation clamp plate 1, little shower nozzle 2, base 3, the position relation between the cushion block subassembly does not change, thereby guarantee the precision of this shower nozzle device.

The material cavity assembly 4 comprises a material cavity block 10 and a material cavity cover plate 11, the material cavity block 10 is covered above the micro spray head 2, a material cavity groove 12 is formed in the material cavity block 10, the material cavity cover plate 11 is covered on the material cavity block 10, the tail portion of the micro spray head 2 extends into the material cavity groove 12, glue is filled in the material cavity groove 12 to glue the material cavity block 10 and the micro spray head 2, and similarly, the glue also adopts low-shrinkage ultraviolet photosensitive glue which is installed on the material cavity block 10 in a gluing mode, so that the influence on the precision of a semi-finished spray head product in the installation process of the material cavity block 10 is prevented, the precision of the spray head device is ensured, the sealing performance between the material cavity groove 12 and the semi-finished spray head product is ensured, and the phenomenon of breakage of the device in the printing process is prevented.

Material chamber subassembly 4 adopts material chamber piece 10, the assembly of material chamber apron 11 to form, is convenient for print the completion back and washs material chamber groove 12, is convenient for carry out cyclic utilization to this device to the material chamber subassembly 4 of assembled can the greatly reduced part manufacturing cost, improves the performance of enterprises.

The last shaping of base 3 has installation department 13, namely, base 3 is the L shape, V-arrangement mounting groove 5 takes shape and the front of installation department 13, the up end of installation department 13 is located same horizontal plane with the up end of clamp plate 1, be convenient for material chamber piece 10 and installation department 13, the 1 amalgamation of clamp plate, in glue filling process, glue height is not higher than the tail terminal surface of little shower nozzle 2, prevent that glue from will little shower nozzle 2's feed inlet shutoff, bear under great printing pressure at material chamber groove 12, guarantee the sealing performance of this device.

The feeding head 14 is formed on the material cavity cover plate 11, a feeding hole is formed in the material cavity cover plate 11, the feeding hole is communicated with the material cavity groove 12, the feeding head 14 is connected with an external pipeline for feeding, the material cavity groove 12 is filled with printing materials through the feeding head 14, and in some other embodiments, the feeding head 14 can be manufactured independently of the material cavity cover plate 11 and used in combination through assembly.

In the embodiment, the micro-nozzle is made of a ceramic body, the ceramic nozzle is high in strength, wear-resistant, stable in chemical property and good in material adaptability, and the micro-nozzle is independently manufactured, detected and screened, so that the appearance of small nozzle aperture, low tolerance and excellent appearance can be realized more easily; taking a 50um nozzle as an example, the hole precision is controlled at 50+ -0.4um, and the consistency of the discharge flow can be effectively controlled.

firstly, preparing each part of an array micro-sprayer, selecting a shape which is easier to realize small nozzle aperture, low tolerance and better in the micro-sprayer selecting process, and then preliminarily assembling a pressing plate, an elastic cushion block assembly, the micro-sprayers and a base to ensure that outer handles of every two adjacent micro-sprayers are in an approximately equidistant state to form a semi-finished sprayer;

step two, mounting the semi-finished product of the spray head on an interval correction station, leveling a fixture on the interval correction station through measurement of a laser height measurement sensor, shooting a needle tip end face image of a first micro spray head through a vertical camera, moving the vertical camera, and sequentially shooting the needle tips of all the micro spray heads to obtain the position of the circle center of an inner hole of each needle tip;

calculating the distance between the needle points in the X-direction projection of each needle point according to the positions of the circle centers of the inner holes of the needle points; sequentially rotating each micro-nozzle to enable the X-direction space of each needle point to meet the design requirement;

step four, after the distance adjustment is finished, taking down the semi-finished spray head product after the distance adjustment, mounting the semi-finished spray head product on a needle point height correction station, leveling a base of the semi-finished spray head product through the measurement of a contact type height measuring sensor, and leveling the upper end surface of the plane reference block through the measurement of a laser height measuring sensor;

taking down the semi-finished product of the spray head after the height of the micro spray head is qualified, and bonding the base, the micro spray head, the elastic block assembly and the pressing plate by using low-shrinkage ultraviolet photosensitive glue to fix the micro spray head;

In the preparation method of the printing device, the concentricity of the center of the discharge hole of the micro-sprayer and the outer handle has deviation, the outer handle of the micro-sprayer can be positioned to only realize the coarse positioning of the micro-sprayer, the relative position of the central hole is changed by rotating the micro-sprayer, so that the X direction (distance) between the adjacent micro-sprayers is changed, the precision of the X direction (distance) can be controlled to be 0.004mm, in the actual adjustment process, the Y direction (moving direction) distance difference between the adjacent micro-sprayers can be ignored, the Y direction position deviation of the micro-sprayer is consistent with the printing route due to the longer printing route of the micro-route, so the Y direction position deviation of the micro-sprayer can be ignored in the actual printing process, the XY direction of the micro-sprayer is accurately positioned, the Z direction (height) of the adjacent micro-sprayers is adjusted after the positioning is finished, and the precision of the whole structure is ensured.

The second step further comprises the following steps of,

and (2.4) shooting an image of the needle tip end face of the first micro sprayer through a vertical camera, moving the vertical camera to enable the circle center of the inner hole of the needle tip to coincide with the center of the image of the camera, and recording the moving coordinate of the micro sprayer as the circle center position of the inner hole of the needle tip.

Through the second step, the position accuracy of the central hole of the micro-nozzle captured by the vertical camera is high, and the position deviation is prevented from being generated in the image capturing process, so that the accuracy of the printing device prepared by the preparation method is improved.

Example two

For further improving the work efficiency of the array type micro-sprayer, set up a plurality of bases 3 on same base 15, then all V-arrangement mounting grooves 5 are made in the disposable cutting of the mode of precision finishing on the blank of a plurality of bases 3, through installing base 3 earlier, the V-arrangement mounting groove 5 to different bases 3 is processed simultaneously again, can reduce the installation error of base 3, be convenient for follow-up carry out position accuracy adjustment to the micro-sprayer 2 of installing in V-arrangement mounting groove 5, the installation mode of rethread in embodiment one is installed the micro-sprayer on different bases 3.

When the micro-spray heads 2 are arranged on different bases 3, the openings of the micro-spray heads 2 are ensured to be at the same height, and the distance between the adjacent bases 3 is kept consistent.

The base 15 is made of marble, the thermal expansion coefficient of the marble material is small, the stress release is small, the precision maintaining capability of the array nozzle under long-term use can be effectively ensured, and the stability of the array micro-sprayer is ensured.

EXAMPLE III

The base 3 is in an inverted T shape, that is, two installation seats 13 are formed on two sides of the base 3, V-shaped installation grooves 5 are formed on the installation seats 13 on the two sides, and then the micro-spray head 2 is installed by the installation method in the first embodiment.

In the concrete implementation process, the distance between the end faces of the mounting seat 13 for forming the V-shaped mounting groove 5 can be adjusted according to the actual area of the printing substrate, so that different printing requirements can be met.

Example four

More V-shaped mounting grooves 5 are formed in the base 3, so that the printing efficiency is improved by installing a plurality of micro spray heads 2 on the base 3.

The preparation method of the array micro-spray head is consistent with the embodiment.

EXAMPLE five

In this embodiment, the membrane groove 6 is located between two adjacent micro spray heads 2, it is the multistage formula structure also to make cushion membrane 8 equally, when cushion membrane 8 and micro spray head 2 laminating, deformation takes place alone for every cushion membrane 8, because elastic cushion block 7 is silica gel, still produce great frictional force when micro spray head 2 and silica gel take place to contact easily, through being located the membrane groove 6 and can reducing the risk that takes place to contact between elastic cushion block 7 and the micro spray head 2 between two adjacent micro spray heads 2, can more reliable and more stable reduce the frictional force between micro spray head 2 and the elastic cushion block subassembly.

The rest of the structure and the preparation method are consistent with the examples.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the terms corresponding to the reference numerals in the figures are used more herein, the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The array micro-sprayer for direct writing printing is characterized by comprising a pressing plate (1), a micro-sprayer (2), a base (3) and a material cavity assembly (4), wherein a plurality of V-shaped mounting grooves (5) are formed in the base (3), the micro-sprayer (2) is matched with the V-shaped mounting grooves (5), the pressing plate (1) is installed on the base (3) to enable the micro-sprayer (2) to be abutted into the V-shaped mounting grooves (5), the material cavity assembly (4) is covered above the micro-sprayer (2), an elastic block assembly is installed between the pressing plate (1) and the micro-sprayer (2), a film groove (6) is formed in the elastic block assembly, the elastic block assembly releases the deformation of the elastic block assembly through the film groove (6), the friction force between the elastic block assembly and the micro-sprayer (2) is reduced, and the micro-sprayer (2) is enabled to rotate in the V-shaped damping mounting grooves (5), Move along the height direction of the micro-spray head (2).

2. The array micro-nozzle for direct-write printing according to claim 1, characterized in that the elastic block assembly comprises an elastic cushion block (7) and a cushion block film (8), the elastic cushion block (7) is mounted on the pressure plate (1), the cushion block film (8) is attached to the elastic cushion block (7), the cushion block film (8) is abutted on the micro-nozzle (2) through the elastic cushion block (7), and the film groove (6) is formed on the cushion block film (8).

3. The array micro-nozzle for direct-write printing according to claim 1, characterized in that the pressure plate (1) is formed with an elastic mounting groove (9), the elastic mounting groove (9) is adapted to the V-shaped mounting groove (5), and the elastic block assembly is mounted in the elastic mounting groove (9).

4. The array micro-nozzle for direct-write printing according to claim 3, wherein the V-shaped mounting groove (5), the elastic block component and the elastic mounting groove (9) are filled with glue to fix the micro-nozzle (2) with the base (3) and the pressing plate (1).

5. The array micro-sprayer for direct-write printing according to claim 1, wherein the material cavity assembly (4) comprises a material cavity block (10) and a material cavity cover plate (11), the material cavity block (10) is covered above the micro-sprayer (2), a material cavity groove (12) is formed in the material cavity block (10), and the material cavity cover plate (11) is covered on the material cavity block (10).

6. The array micro-nozzle for direct-write printing according to claim 5, characterized in that the upper end of the micro-nozzle (2) extends into the cavity groove (12), and the cavity groove (12) is filled with glue to glue the cavity block (10) and the micro-nozzle (2).

7. The micro-nozzle array for direct-write printing according to claim 6, wherein the base (3) is formed with a mounting portion (13), the V-shaped mounting groove (5) is formed on the front surface of the mounting portion (13), the upper end surface of the mounting portion (13) and the upper end surface of the pressure plate (1) are located on the same horizontal plane, and the glue level is not higher than the upper end surface of the micro-nozzle (2).

8. The array micro-nozzle for direct-write printing according to claim 5, characterized in that the feeding head (14) is formed on the material cavity cover plate (11), and the feeding hole is formed in the material cavity cover plate (11) and is communicated with the material cavity groove (12).

9. The method for preparing an array micro-nozzle for direct-write printing according to any one of claims 1 to 8, comprising the steps of,

preparing each part of the array micro-nozzle, and preliminarily assembling the pressure plate, the elastic block assembly, the micro-nozzle and the base to form a semi-finished nozzle product;

mounting the semi-finished product of the spray head on an interval correction station, leveling a clamp on the interval correction station through measurement of a laser height measuring sensor, shooting an image of the needle tip end face of a first micro spray head through a vertical camera, moving the vertical camera, and sequentially shooting the needle tips of all the micro spray heads to obtain the position of the circle center of an inner hole of each needle tip;

calculating to obtain the X direction of each needle point according to the position of the circle center of the inner hole of each needle point, wherein the X direction is the orthographic projection direction of the left and right spacing of the needle points of the micro-spray head, and the inner hole spacing of the needle points under projection; sequentially rotating each micro-nozzle to enable the X-direction distance of the inner hole of each needle point to meet the design requirement;

taking down the semi-finished product of the spray head after the distance adjustment is finished, installing the semi-finished product of the spray head on a needle point height correction station, leveling a base of the semi-finished product of the spray head through the measurement of a contact type height measuring sensor, and leveling the upper end surface of the plane reference block through the measurement of a laser height measuring sensor;

10. The method for preparing an array micro-nozzle for direct-write printing according to claim 9, wherein the second step further comprises the following steps,